NumberConstructor.cpp [plain text]
#include "config.h"
#include "NumberConstructor.h"
#include "Lookup.h"
#include "NumberObject.h"
#include "NumberPrototype.h"
#include "JSCInlines.h"
#include "JSGlobalObjectFunctions.h"
#include "StructureInlines.h"
namespace JSC {
static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsInteger(ExecState*);
static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsSafeInteger(ExecState*);
}
#include "NumberConstructor.lut.h"
namespace JSC {
STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(NumberConstructor);
const ClassInfo NumberConstructor::s_info = { "Function", &InternalFunction::s_info, &numberConstructorTable, nullptr, CREATE_METHOD_TABLE(NumberConstructor) };
static EncodedJSValue JSC_HOST_CALL callNumberConstructor(ExecState*);
static EncodedJSValue JSC_HOST_CALL constructNumberConstructor(ExecState*);
NumberConstructor::NumberConstructor(VM& vm, Structure* structure)
: InternalFunction(vm, structure, callNumberConstructor, constructNumberConstructor)
{
}
void NumberConstructor::finishCreation(VM& vm, NumberPrototype* numberPrototype)
{
Base::finishCreation(vm, NumberPrototype::info()->className);
ASSERT(inherits(vm, info()));
JSGlobalObject* globalObject = numberPrototype->globalObject(vm);
putDirectWithoutTransition(vm, vm.propertyNames->prototype, numberPrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "EPSILON"), jsDoubleNumber(std::numeric_limits<double>::epsilon()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MAX_VALUE"), jsDoubleNumber(1.7976931348623157E+308), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MIN_VALUE"), jsDoubleNumber(5E-324), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MAX_SAFE_INTEGER"), jsDoubleNumber(maxSafeInteger()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "MIN_SAFE_INTEGER"), jsDoubleNumber(minSafeInteger()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "NEGATIVE_INFINITY"), jsDoubleNumber(-std::numeric_limits<double>::infinity()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, Identifier::fromString(&vm, "POSITIVE_INFINITY"), jsDoubleNumber(std::numeric_limits<double>::infinity()), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, vm.propertyNames->NaN, jsNaN(), PropertyAttribute::DontDelete | PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, vm.propertyNames->parseInt, numberPrototype->globalObject(vm)->parseIntFunction(), static_cast<unsigned>(PropertyAttribute::DontEnum));
putDirectWithoutTransition(vm, vm.propertyNames->parseFloat, numberPrototype->globalObject(vm)->parseFloatFunction(), static_cast<unsigned>(PropertyAttribute::DontEnum));
JSC_NATIVE_INTRINSIC_FUNCTION_WITHOUT_TRANSITION(Identifier::fromString(&vm, "isInteger"), numberConstructorFuncIsInteger, static_cast<unsigned>(PropertyAttribute::DontEnum), 1, NumberIsIntegerIntrinsic);
}
static EncodedJSValue JSC_HOST_CALL constructNumberConstructor(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
double n = exec->argumentCount() ? exec->uncheckedArgument(0).toNumber(exec) : 0;
RETURN_IF_EXCEPTION(scope, encodedJSValue());
Structure* structure = InternalFunction::createSubclassStructure(exec, exec->newTarget(), exec->lexicalGlobalObject()->numberObjectStructure());
RETURN_IF_EXCEPTION(scope, encodedJSValue());
NumberObject* object = NumberObject::create(vm, structure);
object->setInternalValue(vm, jsNumber(n));
return JSValue::encode(object);
}
static EncodedJSValue JSC_HOST_CALL callNumberConstructor(ExecState* exec)
{
return JSValue::encode(jsNumber(!exec->argumentCount() ? 0 : exec->uncheckedArgument(0).toNumber(exec)));
}
static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsInteger(ExecState* exec)
{
return JSValue::encode(jsBoolean(NumberConstructor::isIntegerImpl(exec->argument(0))));
}
static EncodedJSValue JSC_HOST_CALL numberConstructorFuncIsSafeInteger(ExecState* exec)
{
JSValue argument = exec->argument(0);
bool isInteger;
if (argument.isInt32())
isInteger = true;
else if (!argument.isDouble())
isInteger = false;
else {
double number = argument.asDouble();
isInteger = trunc(number) == number && std::abs(number) <= maxSafeInteger();
}
return JSValue::encode(jsBoolean(isInteger));
}
}